、 大氣、呼吸氣、香精香料和室內(nèi)空氣的高沸點(diǎn)化合物，如醇、酚、胺、醛、酮和鹵代芳烴等。

浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司建立用熱脫附-氣相色譜/質(zhì)譜聯(lián)用法(ATD-GC/MS)測(cè)定室內(nèi)空氣中苯系物的分析方法。
[方法]采用TenaxTA吸附-二次熱解吸-毛細(xì)管氣相色譜/質(zhì)譜法定量,研究確定了采樣方法、解吸條件和分析條件。
[結(jié)果]實(shí)驗(yàn)表明苯、甲苯、乙苯、間(對(duì))二甲苯、苯乙烯和鄰二甲苯的吸附效率均在97%以上,解吸效率均在99%以上,其相對(duì)標(biāo)準(zhǔn)偏差小于10%,回收率在96.8%～104.8%之間,線性相關(guān)系數(shù)在0.9993～0.9997之間,對(duì)應(yīng)的低檢出濃度分別為0.0001、0.0007、0.0005、0.0005、0.0005、0.0007mg/m~3。
[結(jié)論]本方法適合測(cè)定室內(nèi)空氣中低濃度的苯系物。

測(cè)定室內(nèi)空氣中苯系物  測(cè)試譜圖：



Determination of benzene series in indoor air
Determination of benzene series in indoor air Details:

Name: Adsorption tube

Specification: 1/4*3.5
Filler: 200mg
Shape: U, straight pipe

Model: TENAX-TA



Tenax-TA application areas: fillers and adsorbents for GC, mainly analyzing high-boiling compounds in water, soil, atmosphere, breathing gas, flavors and fragrances and indoor air, such as alcohols, phenols, amines, aldehydes, ketones and halogenated aromatic hydrocarbons.

Haohan Chromatography (Shandong) Applied Technology Development Co., Ltd. established an analytical method for the determination of benzene series in indoor air by thermal desorption-gas chromatography/mass spectrometry (ATD-GC/MS).
[Method] Using TenaxTA adsorption-secondary thermal desorption-capillary gas chromatography/mass spectrometry, the sampling method, desorption conditions and analysis conditions were determined.
[Result] The experiment showed that the adsorption efficiency of benzene, toluene, ethylbenzene, m-(p-)xylene, styrene and o-xylene were all above 97%, the desorption efficiency was all above 99%, and the relative standard deviation was less than 10%. The recovery rate is between 96.8% and 104.8%, and the linear correlation coefficient is between 0.9993 and 0.9997. The corresponding minimum detected concentrations are 0.0001, 0.0007, 0.0005, 0.0005, 0.0005, 0.0007 mg/m~3, respectively.
[Conclusion] This method is suitable for the determination of low-concentration benzene series in indoor air.

Determination of benzene series in indoor air Test spectrum: